package cn.tedu.v2_3;

import java.io.*;
import java.net.ConnectException;
import java.net.Socket;
import java.net.UnknownHostException;
import java.util.Scanner;

/**
 *    练习1.Client 添加 IP 功能
 *       2.Server 关闭通讯、代码简洁，写Client关闭通讯、代码简洁
 *       172.21.69.1
 */
public class Client {
    private Socket socket;
    public Client() {
        try {
            socket=new Socket("127.0.0.1",6666);
            ip= socket.getInetAddress().getHostAddress();
        }catch (NullPointerException e){
            System.out.println("友情提示：IP传入错误导致连接失败");
        } catch (UnknownHostException e){
            System.out.println("友情提示：IP传入错误");
        } catch (ConnectException e){
            System.out.println("客户端连接失败：建议检查IP或者端口号");
        } catch (IOException e) {
            System.out.println("客户端链接服务器失败，提示：检查IP/端口");
        }
    }
    private String ip;
    public void start()  {
        PrintWriter pw=null;
        try {
             pw=new PrintWriter(new BufferedWriter(new OutputStreamWriter(socket.getOutputStream(),"UTF8")),true);
            System.out.println(ip+"对服务器端说话：");
            Scanner input=new Scanner(System.in);
            String line=null;
            while (true){
                line=input.nextLine();
                pw.println(line);
                System.out.println("写出成功~");
            }
        }catch (UnsupportedEncodingException e){
            System.out.println("客户端/服务器编码集有问题");
        } catch (IOException e) {
            System.out.println("客户端链接服务器：IO流操作出现错误");
        }finally {
            if (pw!=null){
                pw.close();
            }
            if (socket!=null&&!socket.isClosed()){
                try {
                    socket.close();
                } catch (IOException e) {
                    System.out.println("客户端关闭失败");
                }
            }
        }
    }
    public static void main(String[] args)  {
        Client client=new Client();
        client.start();
    }
}
